We are running civil3d 2008 with all service packs and hotfixes installed. On some machines when we initiate a subassembly command we are unable to click and change the values for the sub-assembly before attaching it. It's not that the values are grayed out, its just that some of our mouses refuse to highlight the text or allow any changes to be made. Generally double clicking works to highlight any values and just type the new value, but some of our mouses will not allow it, Its almost as if the mouse highlights the text and then un-highlights it or simply refuses to place the sursor in the value field at all. Our workaround is to attach the subassembly using the default values and later on edit the values under subassembly properties where the mouse functions fine. This problem has occured on three or four different machines and is the same for all subassemblies. The affected machines also do not have a common mouse manufacturer either. I've had it happen using Microsoft, intellimouse, logitech, etc. Some users can change the values beforehand and others can't. Is there an interface setting or double click speed setting I'm missing that will fix this?